Try Cala

Cala is a Rust library — you embed the ledger in your own service rather than running a standalone server. All you need is Rust and a PostgreSQL database.

Add the Dependency

Add cala-ledger to your Cargo.toml:

cala-ledger = "0.20"

Initialize the Ledger

Connect to PostgreSQL and initialize the ledger:

use cala_ledger::{CalaLedger, CalaLedgerConfig};

let pool = sqlx::postgres::PgPoolOptions::new()
    .max_connections(20)
    .connect("postgres://user:password@localhost:5432/pg")
    .await?;

let config = CalaLedgerConfig::builder()
    .pool(pool)
    .exec_migrations(true)
    .build()?;
let cala = CalaLedger::init(config).await?;

Run the Example

Clone the repository and run the complete example, which creates a journal, accounts, transaction templates, and posts transactions:

git clone https://github.com/GaloyMoney/cala.git
cd cala
make reset-deps rust-example

Next Steps

• browse the full API documentation on docs.rs
• explore the Rust example on GitHub